That's something no amount of potion will ever change.

The results show that the nanograined microstructure with the average grain size of obout 20 nm is obtained in the surface layer of this steel by high-energy peening process. The phase constitute is not changed. The hardness of the peened sample is increased by about 21.5%.

实验表明，含氮中锰奥氏体耐磨钢经高能喷丸处理后，可获得平均晶粒尺寸约为20nm的纳米晶组织表面层，表层相组成没有变化，喷丸后硬度提高了约21.5%。

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The results show that the fatigue life of the peened joint is 20~ 30 times as long as the as-welded joints. Therefore, the improvement of the fatigue strength of welded joints by ultrasonic peening is remarkable.

试验结果表明：超声冲击方法对焊接接头疲劳强度的改善效果十分明显，能够提高疲劳寿命20～30倍以上，极具实用价值。

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In order to study the effect on the properties of laser peened brass, a brass sample is processed with Nd ∶ YAG lasers and its hardness, residual stress, roughness and texture are examined and analyzed.

为了研究激光冲击强化对黄铜材料性能的影响，利用Nd∶YAG激光器对试样进行冲击强化处理，对其表面硬度、表面形貌、粗糙度和残余应力进行了实验测试和分析对比。

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A half-analytical expression of stress concentration coefficents due to surface roughness was proposed, and a prediction method of fatigue limits of peened specimens with surface fatigue sources was suggested.

提出了表面粗糙度引起的应力集中系数的半解析表达式以及疲劳源在表面时疲劳极限的预测方法。

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The microhardness increased by at least 81% directly at the surface for the traditional peened sample at 0.15 mmA peening intensity.

在0.15mmA喷丸强度下，复合材料表面显微硬度提高了81%以上。

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Torque prestrain may induce damage or cracks which decrease the reverse torsion fatigue limit of shot peened specimen.

在喷丸前或后进行预应变均使疲劳极限下降。这和预应变时造成的损伤或在夹杂周围造成裂纹有关，它使疲劳寿命降低。

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Hardness distributions for shot peened specimen show a softened layer in the subsurface.

喷丸试样的硬度分布曲线表明，在表下一定深度存在软化区，而裂纹萌生的位置比软化区更深。

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Precipitation of γ″ Phase and Residual Stress Relaxation in Shot Peened Inconel 718

Inconel718合金喷丸层γ〃相的析出及应力松弛

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Study on the Fatigue Crack Inclusion of the Carburized and Shot& peened Gear Steel

对渗碳和抛丸强化齿轮钢疲劳裂纹夹杂物的研究

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Microstructural effect on fatigue crack initiation for shot peened copper and brass

纯铜和黄铜喷丸强化的组织效应

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Residual stress field and stress relaxation in shot peened Inconel 718

Inconel718合金喷丸残余应力场及应力松弛的研究

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In various surface processing craft, the surface peened is a valid technique.

在各种表面处理工艺中，表面喷丸被认为是一个有效的手段。

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Yield Strength of Shot Peened Surface of a Metallic Material in Hard State

硬状态材料喷丸表面的屈服强度

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All those in the evening classes persisted to the end.

所有上夜校的人都坚持下来了。

词典精选例句

Nothing's impossible and it all depends on man; you would win through if you persist.

事在人为，努力干下去，总会赢得胜利的。

汉英大词典

She persisted in going her own way, although I asked her not to.

虽然我劝阻她，她还是愣干。

汉英大词典

This problem persisted for much of the decade.

该问题在那10年的大部分时间里一直存在。

外研社英语同义词辨析词典

She persisted with her experiment despite the lack of money.

尽管缺少资金，她还是坚持自己的实验。

外研社英语同义词辨析词典

'You haven't answered me,' she persisted

“你还没有回答我，”她追问道。

柯林斯高阶英汉双解学习词典

It wasn't hard to see why she persisted in that image.

不难看出为什么她会保持这种印象。

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